﻿82 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  conglomerate 
  also 
  outcrops 
  so 
  near 
  the 
  overthrust 
  fault 
  of 
  the 
  

   Georgian 
  that 
  it 
  might 
  well 
  be 
  a 
  t>lock 
  caught 
  in 
  the 
  fault, 
  although 
  

   it 
  is 
  there 
  underlain 
  and 
  overlain 
  by 
  shale 
  of 
  presumably 
  Normans- 
  

   kill 
  age. 
  At 
  the 
  Moordener 
  kill 
  a 
  few 
  miles 
  south 
  from 
  Rysedorph 
  

   hill, 
  it 
  is 
  seen 
  five 
  times 
  repeated 
  in 
  the 
  section 
  and 
  apparently 
  folded 
  

   in 
  with 
  Normanskill 
  shales 
  I 
  to 
  2 
  miles 
  away 
  from 
  the 
  overthrust 
  

   fault. 
  Another 
  fine 
  exposure 
  of 
  this 
  conglomerate 
  which 
  also 
  has 
  

   furnished 
  Plectambonites 
  pisum 
  is 
  seen 
  in 
  the 
  shore 
  

   cliffs 
  at 
  Papscanee 
  island, 
  about 
  5 
  miles 
  below 
  Albany. 
  This 
  out- 
  

   crop 
  1 
  is 
  at 
  least 
  2 
  miles 
  away 
  from 
  the 
  overthrust 
  plane, 
  and 
  another 
  

   good 
  exposure 
  at 
  Schodack 
  Landing 
  is 
  equally 
  distant. 
  The 
  typical 
  

   Rysedorph 
  Hill 
  conglomerate 
  southeast 
  of 
  Albany 
  is 
  thus 
  too 
  far 
  

   away 
  from 
  the 
  thrust 
  fault 
  on 
  which 
  the 
  Georgian 
  was 
  brought 
  

   westward 
  to 
  be 
  considered 
  as 
  having 
  been 
  brought 
  along 
  this 
  plane, 
  

   and 
  it 
  is 
  seen 
  in 
  a 
  number 
  of 
  places 
  clearly 
  intercalated 
  in 
  the 
  

   Normanskill 
  shale 
  as 
  an 
  intraformational 
  conglomerate. 
  

  

  Whatever 
  may 
  be 
  the 
  origin 
  of 
  this 
  remarkable 
  rock, 
  the 
  charac- 
  

   ter 
  and 
  variety 
  of 
  the 
  pebbles 
  and 
  the 
  character 
  of 
  their 
  faunules 
  

   indicate, 
  as 
  we 
  have 
  shown 
  in 
  the 
  paper 
  on 
  the 
  Rysedorph 
  Hill 
  

   conglomerate, 
  that 
  they 
  are 
  derived 
  from 
  beds 
  not 
  now 
  exposed 
  in 
  

   the 
  slate 
  belt 
  and 
  probably 
  brought 
  from 
  the 
  east, 
  especially 
  since 
  

   the 
  fossils 
  are 
  of 
  Atlantic 
  type. 
  The 
  age 
  of 
  the 
  conglomerate 
  

   which 
  in 
  museum 
  Bulletin 
  42 
  had 
  been 
  held 
  to 
  be 
  lower 
  to 
  middle 
  

   Trenton, 
  is 
  from 
  the 
  aspect 
  of 
  the 
  faunules 
  of 
  both 
  the 
  youngest 
  

   pebbles 
  and 
  the 
  matrix, 
  probably 
  greater 
  and 
  corresponding 
  to 
  the 
  

   Black 
  river. 
  The 
  Normanskill 
  shale 
  with 
  which, 
  it 
  is 
  associated 
  in 
  

   the 
  Rysedorph 
  hill 
  and 
  Moordener 
  kill 
  localities, 
  has 
  been 
  found 
  by 
  

   Ulrich 
  in 
  the 
  Athens 
  trough 
  to 
  be 
  upper 
  Chazyan 
  in 
  age. 
  We 
  have 
  

   therefore 
  considered 
  the 
  conglomerate 
  as 
  originally 
  overlying 
  the 
  

   Normanskill 
  shale 
  and 
  thus 
  represented 
  it 
  in 
  the 
  diagram, 
  text 
  figure 
  

   15. 
  Investigations, 
  however, 
  carried 
  on 
  since 
  have 
  brought 
  out 
  the 
  

   fact 
  that 
  the 
  Normanskill 
  shale 
  embraces 
  two 
  formations, 
  as 
  is 
  more 
  

   fully 
  stated 
  below 
  (page 
  93) 
  and 
  that 
  the 
  Rysedorph 
  Hill 
  con- 
  

   glomerate 
  is 
  intercalated 
  in 
  the 
  upper 
  division 
  of 
  Black 
  River 
  age. 
  

  

  The 
  peculiar 
  fauna 
  which 
  was 
  described 
  from 
  this 
  conglomerate 
  

   by 
  the 
  writer 
  has 
  been 
  recognized 
  in 
  part 
  in 
  the 
  Chambersburg 
  

   limestone 
  of 
  Pennsylvania 
  of 
  the 
  Chambersburg-Massanutten 
  and 
  

  

  1 
  This 
  exposure 
  while 
  then 
  known 
  to 
  the 
  author, 
  was 
  accidentally 
  omitted 
  

   in 
  Bulletin 
  42. 
  

  

  